I don't care what other people say; this is my favorite card. It's flying, so you can use it in a flying deck. You can see your opponent's hand, so you can see what they're going to do. They can see yours, so they'll save that Doom Blade for your fatty. It's a 1/3, so it can't be beaten by a 2/1 first striker, and most of all, it's an Illusion, now an established tribal.

Eh, not all that great considering that the owner has to play with their hand revealed as well. If a player wnted to see their opponents hands then it would probably be better to play Telepathy instead. That way the player could maintain better control by knowing what his/her opponent has in hand while keeping their's hidden. Not to mention that its on a wimpy 1/3 body for three mana; there are way more better blue cards for three mana.